Combined type-writing and computing machine.



, e. 0. DEGENER. COMBINED TYPE WRITING AND COMPUTING MACHIN EI U ml man 5 W Ma r d I m u 1 APPLICATION FILED MAY H. NIH. 1,226,950.

e. OPDEGENER. COMBINED TYPE WBIT ING AND COMPUTING MACHQNE.

1,226,950. APPLICATION FILED my 11. m1. Patented Marga 1917.

a SHEETS-SHEET 2 s. museum. comma: TYPE wnnms AND commune MACHINE.

UNITED STATES Pla iarismv omen onsrmvn ofnneENme-or NEW YORK, N. in. \ASSIGNOB- T0 mmimwoon lcorrru'rmo MACHINE 'CQMEANY, 0F NEW'YOBK, N. Y., A CORPORATION 01 NEW roux.

COMBINED TYPE-WBITiNG AND COMPUTING i To all whom it may concern:

Be it known that I,'Gus'rAve O. Dncnmm,

puting and typewriting machines of the Underwood-Eight type. While the present invention has to do with improvements in'the manner of control of the computing devices, articularly the indexing operation; nevertheless, the machine as a whole is rendered more eflicient and useful.

I do not claim herein a normally open motor circuit, because the same is disclosed and.

claimed in a patent granted to me June 20, 1916, No. 1,187,718, in which there is shown a machine of the Underwood-Wright type having the usual escapement wheel carrying a series of pins, for determining how far the computing members are to be driven by a motor,'and' in said device the. motor is nor- 'mallyiclle and is connected in driving relation to the indexing wheel by a friction clutch; the circuit to. the motor being controlled by'any numeral key, and means being provided whereby the-circuit is held closed until the escapement actionvhas been completed, when a portion of the escapement mechanism 'causes the opening of the motor circuits Nor do I claim herein a gear variably mutilated'by the keys, because such structure is claimed in another patent, issued to me March 12, 1912.30. 1.020.082, in which is shown an Underwood-\Vright machine, wherein a constantlymunhing motor controls the. indexing operation of the computing mechanism by means of a gear; capable of being variably mutiliatcd by the numeral keys of a typewriter. I In. said Patent.

-1020.082. opinion is shown'meshing with said mutilated gear for driving said gear different distances under the control of the keys. the distance driven r'lcpendiirc on the point. at which the gear is mutilated; ln said patent. whenever a key depressed. thc

nmtilatcd gear rcstored andcllgaged by the driving pinion so that thc latter turns Specification of Letters Patent.

Application filed May 17, 1911. Serial No. 627,669.

' tIhis invention relates to computing Ina-'- chmes, and particularly to combined comwith the applications upon .ents nere granted, I use a moton'having; circuit normally open, and a-seriesoi my 70 Patented Ma -22; 1917.

the gear until the point is reached where the 5' gear has been mutilated by the'a'ctire key, at which point the gear and pinion run out of mesh and the pinion "again rotates idly. A clutch is also provided in said patent,

which -clutch is under the-control of'the numeral keys, and arranged to be--ai1tomatically closed before the computing; operation begins; and again released immediately at the close of the computing operation,'boh the closing and the opening taking place on ft'he up stroke .of any key. a -fl: 4 .In the 7 present application, copending which-said patmeral keys, each'numeralkey actingto-closc the-n 1otor circuit on its down stroke? 1 also provide an indexing ori computatiunavheel in the form of a gear ivhicli may bea'ariahly mutilated and a clutch in the connections'beta'eenfthe motor and theindexing nvheel, or

gear. A drivingpinion engagesund turns the computationtor indexing .uh'eel; when said wheel is restored at; a point adjacent zthe dn-vin pinion I'The clutch is c-losedinthe norma ositionof the parts, but is opened on .the down stroke I of any key the. opening taking place substantially simultaneously with the closing of the motor circuit, so that the motor which immediately begins to move may not tur n the computation gear. The key. as is usual-fin-thesemachines, also sets an index pin to determine houi far the indexin wheel or comut'ation -gear shall turn. its appropriate index pinj closes the. motor' circuit and opens the clutch;"a ll oisaiid'opcm ations taking place at: approximately the same. time-{the key als'oion its downstroke causing the gear, which -normallyg'stanils mutilated at'th'e point adjacent thegdriving pinion. to-be restored at said pointgso that the indexing wheel mayibe drilren as-soon as the clutch 'is'closer'l,,-to cause the driving wheel to more. .1 On the upstroke of the key. iooj and preferably through the. medil'nn of the traveling carriage of the trficwrittgn-t-he clntl'li is closed and the driving'whoclmoves thc indexing or-computation \rh'ecl :i distance depending upon the key rlepiesscdr'tlnmotor circuit being -a'uto1 n:\ticall- \1 opcncd at the completion of, the compo 'ng npcra- 'tion, said opening of the motor-"circuitpref? hus. the'key. (m -its down. stroke sets 90 V longer time which may tie allowed for the computing action to take place, while, on

account of the intermittent motor, the machine is less noisy and the wear of the parts and the cost bfcperation are reduced.

Other features and advantages will hereinafter appear.

In the accompanying drawings, Fiqure 1 is a side elevation of an Underwootl combined typewriting and computing machine embodying the present improve-.

ments.-

Fig. 2 1s a sectional elevation of-the uShal computing wheels and carriage therefor.

Fig. 3 is a perspective view of 'the main computation wheel mgea'r, together with the key-operated means for controlling the same.

Fig. 4 is a'view of the escapement wheel of the typewriter, and is to be read. in con- 'nection with Fig. 3. i

Fig. 5 is a rear sectional elevation-of the mechanism for controlling the openingand closing 'ofthe motor and circuit. Fig. 6 is a side elevation of the main computation wheel and driving pinion therefor. together with the releasable device for holdingv the motor circuit closed; said releasable device shown in inoperative position. a v 1 Fig.7 is a view similar to Fig.6, but showing the releasable device inoperative position.

Fig. 8 is a sectional rear elevation of the main computation gear and its connections, and also showing the clutch between the motor. and the pinion which meshes with said gear, and the means for operating the clutch.

Fig. 9 is'a sectional view of theparts seen at Fig. 8.

Fig. 10 is a perspective view of the 'main computation gear, which is mutilatable, and

the pinion which operates the same.

, Fig. '11 is a longitudinal sectional view of the clutch which controls the co ect-ion ,between the electrical motor and the inion seen at- Fig. 10. Letter-type keys 1 and wheel 11, and thesedogsare 'rocked or con-H:-

by a key. numeral type keys 2 are mounted on levers 3, which, by means index drive or computation wheel 22 con--.

nected to the computing wheels and capa ble of turning any thereof. The pins are detained in "either normal or projected posi Seats or grooves 21" in the pins.

Each of said levels It} bears upon a uni veisal plate or bar 23 fixed upon a sliding rod '24. said rod carrying 'a head 2-.1'and tions by a coil-spring band 21, engaging .one end of a lever 26 being confined between the head and the plate 23, so as to be rocked thereby. This lever is suitably fulcrumed at 2'. and at its outer end is connected by'alink 28 to an arm 29 fixed upon a horizontal shaft 3t). T his shaft is intended to operate a clutch mechanism whereby a constantly rotating driver is caused intermittently. at thenmnc-ral key strokes. to turn the main computation wheel or driver 22.

The "power isfurnished by an electrical motor 31, which may be connected by a -bevel pinion 34 on motor shaft 33 meshing .with a bevel pinion 35 on shaft 36; the

latter'carrving at itsfron't end a bevel pin- 1on3? meshing with a bevel-pinion 3S. loose on a horizontal shaft 39.

l'pon said pinion 38 is fixed one member 40 of a positive'toothed clutch. whose function it is to connect said pinion 3S to-the shaft. 39.- :he latter carrying a pinion 41 to mesh with the series of pins or settable teeth 21 on the main computation wheel or driver 22-, whereby said pinion 41 can turn said wheel 22 and hence the computing wheels which-are connected thereto. the wheel "22 becoming for. the time being a gear wheel and so being turned to an extent dependent upon the position thereon of the last-displaced pin '21. that is. upon- .the point at whichthe wheel was mutilated During the down stroke of key Baud the rocking of shaft 30; ac m'nAQ fixed on said shaft rocks downwardly at Fig. S to turn an arm =13 provided upon a clutch-controlling or actuatingflever 46. which is pivoted at 47' upon a. fixture. This "movement ot the normallv c osed. Said movement of the arm 16 withdraws the member 49 from the member 40. The member 49' is in the form of a sleeve which is splined to the shaft 2H). as

seenf'a-t 50, and has a groove 51 to receive filever 46. -\s will presently be the head P s.

'lever46 o ens the'clutch. the latter being tlia'down stroke, of the key 2 i by the previously set-pin 21, a's'seen best in-.pers'pectii' e at Fig. 10. Moreover the DIOCOF'WhilQ running at a starting speed it eithertstarts without the'load of-turni'ng'the -sha :ft.l3}1 and the computing 'rnechanisn1,.or

'isz viinmediately relieved 'o'f -said load and.

thus'speeds up more" readily.

,, yfireferahly, a detent 53 falls inton' notch 7 1'5 1, on;p1ate"14 fixed tothe arm 29, at or ,neamtheficompletion of, the down stroke of thekey --2,'so as to prevent saidrock shaftfrom returning premati'i'rely under 'theinfluence of-itsreturning spring 55. Said de is 'normall} idle, riding upon the edge-zof 'the"plate olfl but at'or a little beforethe"completion of the down stroke of thekey, is'caused by a spring 56 to snap into the notch 54, and a rod 57 connected 'to detentI53 swings a lever 58, to cause the -latter-to 'thrust a rod '59":ind 'a' pallet thereon into'engagenien't u'ith' "the tooth of the "typewriter carriage escapeinent- \vheel1 1"."." p A At the initial omp of the return stroke of the key (before the latch 53 arrests the returning memberSQ')" the escapement wheel thereli'j; returning tonorinalpos'itions the 5 membe ,359: 58,5Tand 53, andhencejrelensing 'tlie r'ock 'shaft30, which is immediate-1y returned to normal position by its sp ng i i r I Upon this, return moi einent o f t-hefrock shift 30,: acei1 fil lon' sgiid rock fsha'ft engages =51 pr'oj P fiQli 3 .611 fi BY a ,siring's the lette'zijgtoufard the nght to'the I positionseen'at1ffiigs.. ;3 :and 8,and therebylfose sj the ol utch eQ -ehl so that the'hiorei 5 rnientyo f the rei'ql fing pinion 38 15 co nrnnnilcittedrto the shaft 39 to 11851360151 pinion 41 p 0 "s'iti n'that thereturning pin 21' engages a thereon the Junction, ofgthe. lat-tel}: being, to

, t'ii'rn the main computation?WlieeLZE by 1 j .1n ea ns of the rep. of; "projecting tl e em f ;.,;V,',-T.h e" Wheel is arrested by the engagementofthe end-21ft! ,the last 1 nioje,cted gin "ZI Which now acts-as astop andirbuts wit a- 1 t eon to .nixedai poh the fra neii'ork;

were 'tioi-i sp i g ionak g' preyents rebound fthe n'heel 22 pht'iou s the fj' the distance through Wh ch It the i i' l'ieelw ilirotatesis equalto the distance be- 'eii the-last projected pin andsa d counop)" 63;; -audhence the -.j'ac ks are jila- .d in such =positions,.that the depression nffnny numeral key- :2 -\\'.lll;'C lTl.lSQ th( -3 I)1'0- jeetioiis of a pin 21 at suo-h ctistance from -tlie St'opfiB as to causethesubsequent rotation of wheel 22 to be equal to the number placed pin mustberetnrned to normal posiof steps indicated by the depressed key; so that the computing wheel-s, presently to be described, will be rotated '11 corresponding distance. r I

-The pinion all is so placed, that when the last displaced pin 21, 21 engagesthe counterstop (33, as seenat Figs. 3 and 8, said pinion can rotate --idly"in the space left vacant-by the-displacement of said'pin, until its-motion dies out, Oflllltil the last-displa ced' pin 21, 2lis-returned to normal posltion.

-In"order to enable thewivheel 2210' be turnedagain, as" willbe understood, the dis-' tiongkand'for this purpose; an arm" 66 is caused to strike that pinmnd-return' it to normal position during the down-stroke of the key; 2-; said-arm being pivoted-at 67 -'upon a fixed support, andhai'ingaforked mem-' ber 68 to engage mm-m or 'lug69 fixed on the rock shaft 30. {This arnY'fiQ mores upwva-rcl at the down stroke of the key, thereby swinging the arnr 66 to the-right from the iosition -at 'Figs. 3-a-nd '8," thereby pushing a'ck the pi'ojeeted" pin 21, 21" to clear. 'the stop 63', and: also to enter the space betiveen adjdcent teeth of the'pinio'n 41.

In case 'tli'e'retu'i'ning pin- 21- collides with tooth of the'pinion 41, the'latt er will yield, the shaft 39 for this purpo'se' being moy'able longitudinally; and aspur or tooth '70 projectingfrom 'a liart'pf the-framework, will beengaged'byii tooth ofth'e pinion-41, andturnithe latter to such position that the in 21 ,may thrust between the teet'lithereof.

referablyfeac'h pinion'tooth is'beveled on one"side at 71 to' engaged'by thtbqthTO,

and on the "other side;- at =72 to beengagedand cai'n'med around-by the rfeturning pm insorne cases' .Th pinion can be thus turned, because the depression-of a, numeral key alwz'iys frees it sl'shaftfit) froh'tthednyingmember 40 of "the clutch bQtWIGBIki-Sil-ldshaft andfthf'rn otor: 'The tooth TO will be engage'dig iil'y when the pinion is In such-popin-ion tooth and .tln"nsts"the pinion back.

" The :S'lizift ;39 and'p in'io n are returned end-- coiled around the "shaft fsysterti oi cornputingfwheels'86 iscon said pinion, a; metim s '76 rigid'with '75,

there is;- lfixed gmaster wheel 8 nga ger internal teetli formed upon the of eo'mputing wheels 86; the latter being, in the form of spur gears to engage gears 87 formed on number-bearing wheels 88.

j The tens-carrying mechanism inoludes'a special tooth 89 provided on each computin wheel 86 to engage and rotate a five-pointe pinion 90, rigid with'which is 'a'pinion 91 meshing with the com uting wheel 86 of next higher denomination. Fixed to both '90 and 91, is a five-lobed wheel 92, heldin ing a bevel pinion 96,meshin'g with a bevel pinion 97 on an upright shaft 98,"the latter having a bevel pinion .99 meshing with. a

bevelpinion 1 00'up on an inclined shaft. 101,

carrying at-its lower end a bevel'pinion- 102 meshing with a pinion 103 on the shaft 36.

The computing wheels are mounted upon a carriage lM-sliding. on rails105 and conriage 7; the shaft 95 being I 94, to permit the endwise'trave I with the carriage 104; i'

There also occurs during-the downward vmovement oifthes'aidkey 2,11 vibration to p nected by an arm 106 to the ty ewriter -c a rined' toroll of the latter the leftat Fig, 3, of a cam 110T," alsofixed upon said rock shaft 30, and oper'ating a bell-crank 108,, 'an' upstandmg --arm;-108- whereof engagesla pin i109 pro ecting-'f rom a bar or slide 110, which is supported 1n aj fixed cylindrical guide'lllt Upon this slide 110-is a,shoulderI1 12,.. which. vibrates or, closes an electrical spring-switch or contact.

' 113, fixed by a'. screw 114.upon,an' insulating said block 115, and preferably yielding.

the'motor31. The bar-110-,-which-closes the motor-tars cuit, is temporarily locked-in efiectiveposi tion by a latch 121, actuated by' a' spring 122 said latch entering a 'notch123.in;sa1d bar.

to lock it; The latch ispivoted at 124. The

loose-engagement or connection of arm 108?.

at 109 permits the return 1movement-of the rock shaftv 30[.and armfifi, while the switchclosing bar'or. slide 110: remains stationary in effective position.

From'the foregoing, it will be understood that at the depression, of the key 2. the motor is started, the clutch pin-ion 3S begins to .turn 'ancl the clutch 40 4915 opened. More- 49 remains erated.

over, the previously set pin 21 is restored to normal position by'the arm '66; the pinion 41 however bein ineffective, owing to the open condition 0 said clutch. Uponthe return stroke of the'key 2, the aper carriage 7 advances-releasing thesha t 30 from-the control of latch 53, and the.spring'55 estores the rock shaft 30 to normal ositi'n, thus. withdrawing the arm 66. an closing the clutch 40, 49, so that the pinion 41- rotates the pin wheel 22 together with the computingfmechanism' connected thereto, to a point determined by the engagement of that pin 21 which was'set by said key, with the counter-stop 63. Upon the wheel '22 being so arrested, the pinion 41' will revolveidly in the space between the adjacent-pins 21.

During the revolution of said wheel 22, the

a releasing-arm. 125 on-said latch 121, .to

turn the latter toward the left-at Fig. 1, thereby withdrawing the .latch from' the notch 123; and permitting a spring 126 (shown diagrannnatically-at Fig." 5)- to re-' store.- the member. 110 :to normal position, and permit the contact -1-13.to swin away {from the contact 11?, thereby opening the .motor circuit,- the-revolution of pinion 41 ceasing as the motor comes .to re'st. 'This '0 ningof the pircuit 'occurs' at the cometionof the computing operation, so that it is sure that power shall be available throughout such operation, The clutch 40.

closed until another key 2 is op- -When the machine'is' operatedrapidly,

the motor, in practice. may never stop; but upon cessation ofoperlation of the machine; the motor comes )0 rest, and the objection- --able.noise. of the gearing ceassfamta. reblock-; a non-conducting washer 116 be ing provided upon said switchto be engaged by: said shoulder 112.: )This switch or'c0n+ tact 113 is thereby moved into engage'ment with a contact 117 secured by 'a screw 118 to "duction'in cost in running the motor-is efmotor-into- "action to turn any computing wheel .tofan extent determined by the key I itself; and that therelease of said'key' will Wires 119and 120 lead from 113 117 to cause the motor to 'stop;- I i The contact or switch arm 113 ispreferably'made of verythin springv metal. which is flexed-by the shoulder 112 from its'normal open position to 'the'closed position seen at Fig. 5." By making the arm thin, consider-- able flexing movement thereof may be secured 'withont burdening"the fin err-keys. Upon the'releasin'g movement. of t e mam her-112 effected by the spring 126, the arm 113 springs away'from the contact 11 7; and

- the liability of objectionable'sparking is nearly or practicallv eliminated. The arms 113,-and 117 are so formed that when 117 is flexed bv the pressure of 113 thereon. there is, a slight endwise rubbing of '11 1119011113,

bedriareinbv said; motor and means for in-' lerrjupting the driving relation between. said -iaIHOtdI HHdiSRiKJRpODIDHtlDg pinion during the i-settingmfinaid devices.

;..2; lirya ciimputiinq machine, the combina- :tibn =ivitlncomputing mechanism, ofia pinion dor-drivingisaidi computing mechanism, a

1: anemia-normally in driving relation with ;saidnpinion numeral keys, .devices settable 1mimbefmieioifnsaidinumeral keys for deter-- :J'lllllll-lgi =ho. i'-E far: said pinion shallbe driven by said.motor, means for interrupting the driving. relationbetween saidjnotor and .g-said pinion rduringzthe,setting of said de- 30. ';ices,. and; means, for subsequently restoring .wthe,dritingi-relation between the motor and gu'saili-aninionpto:enalile the ,motor to drive fl e -pinion as determined by the settable de- :lgcomputing machine, the combinati'omgw-ithcomputing mechanism, of a pinion $95- Udriuingi said. computing mechanism a notoranormally in driving relation with I said pinion, numeral keys, devices scttable 40 lJt-Ztth'j-Zfiht or said keys for determining how j--far,- sairlpinionislu ll be driven by said mo- ;tor,mea 1s rfQl'. interrupting the driving relat;ioi ,betuaensaid motor and said pinion g -dm ipgvthc-setting-dfsiiid devices, and means amtmIl equentlgu;

pg the, driving; relation be twee 1 sin cifln'i ot'o'rnnct computing pini'on to en lylethe nqtor todrive' the pinion as dc tcrmiued by ..tl 1e settable devices.

' A computing machine having compute: ngcliaii' 1151 a compntingpinion for a t gyg the ne. i d" an electric motor for .contgollinw aiitp n on, said motor hav ng .j;:i;,.}),qi 'ni:i li :O'DQIIIZ circuit; and rompnsmg irr fin bi natiou inally effect ve conne'cietl vee tlie' pQtor and said computg .nurrgm aaag are nscoutrolled by a numeral key on its do\ 'n'-strol ;e for closing the 5-; mater aired-*1aaet lete m as. said .compu -1 'pui|on "'shall be driven and said"connections ineffective, said key zaiiv onev of said keys for sub-- ing machine having numeral keys, computing mechanism, a motor having a normally open circuit and a tvpew riter carriage controlling the acriatim drive of said computing mechanism bv said motor; and comprising in combination, a computing pinion for driving said computing mechanism, means controlled by a numeral key for clos; ingi said circuit and determining how far said computing pinion shall be driven by said motor, said kev subsequently control ling the feedinrz' of said carriage and the connecting of the motor to, the computingpinion for effecting a drive of the computing mechanism by the motor, 4

6. In a computing machine, the combination with a system of computing wheels and adriving means for turning them, of. nu-

merall keys oi-controlling said driving means, a motor having a normally open circuit, a clutch between said motor and said master wheel normally closed, means controlled by the keys for closing the motor circuit, opening the clutch, and limiting the movement of the driving means, means for subsequently. closing the clutch, means dependent upon themovement ofthe driving means and independentof the clutch, for disconnecting the driving means from said motor at the completion of a movementof the driving means, and means for opening said circuit upon the disconnection of said driving means from said motor.

7. In a computing machine. the combination with computing mechanism, including a computation gear capable of being mutilated, of a drive pinion to mesh with said gear, a set of keys, means controlled by said keys to variably-mutilate said gear, thereby to disconnect the'pinion from the same at a point predetermined by the key operated, a source of power for driving the pinion a distance determined by the set .pin', a clutch betvveen said source of power and said drive inion normally closed,- and means actuated y any one of said keys-on its down-stroke for opening said clutch andsetting-one of said pins.

' 8. The combination with a, computation gearincluding a series of movable pins, of means for mutilating said gear by projecting any of said pins, :1 drii'ing pinion to mesh with said gear, an electrical circuit including a motor to operate said piniom said circuit being normally open. means controlled by the keys to close said circuit and project a pintovariably mutilate said gear lated, if set of numeral keys, a drive pinion-to mesh "withsaidear, :1 source of 'power,'a clii tch between said source of power and 'saidi drive pinion, aid clutch being normally .closed, means. controlled by said keys on their down-strokes to variably mutilate said ear and concomitantly restore. the

gear at t e point where 'itwas previously mutilated, thereby to reconnect said gear P and said drive pinion and for opening said clutch and means controlled by said keysonf'their up-strokes for closing the same. to

, reconnect the motor and drive pinion,

10. Thel 'coi'nbination of two primaryfele ments gconsistinglof a master wheel and a system ofcom p itingwheels, a carriage con- -riage,'a computation gearconncted tosaid.

nected'toone of said primar elements, -a set of keys ha'vingmeans'to eedsaid carmaster wheel and capable of being mutilated,-. apinion 'to mesh with said .gear,

' means to-enable' the keys to variably .niutilate said gear, thereby to disconnect the pin-j ion' from the said'gear at ,a-,point deterin d b th key. operated, a powerd inember,'a normally 'closed clutch between depressionof a key. I I 11.- In a computing machine, the combina- "tion'with a computation gear normallymutilated, of a pinion to-meshwith said gear,- a .set of keys,- means to enable the keys to variably mutilate said gear, thereby to .dis-

connect thepinion from. the same at a point determined-by the key operated,

means for enabling any of said keys to concomitantlyfrestore, the gear at the point where it was previously mutilated, thereby to reconnect said" gear. with said' pinion, a

series of normallyinefl' ective stops settable by said keys concomitantly with the muti-' lation of said gear, a counter-stop, a'power rotated, member, a normallyclosed clutch between said power-rotated member and --sai d pinion, means for enabling said keys to open said clutch when restoringthe gear 'wher'e'it' was previously mutilated, a carriage controlled by said keys and coiiperating with said computation gear, means controlled by said carriage for closing said I clutch, a normally open electrical circuit ii cluding said power rotated member, means to enable said keys to close said c rcuit, and means dependent upon the operation of said -gear for opening said circuit, so that the power-rotated member is idle when the pinion engages the mutilated part of the gear;

12. In a computing machine, the combination of a master wheel, a gang of computing I devices, and compris g in combination a fkey, a normallyeelose clutch between said niotor and saidi' computing device's, means for startingjsaidmotor and releasingsaid,

wheels, a drive gear connected to said master wheaLai'id capable of be ngmutilated, a pinion to 'mesh with said gear, a set of keys,

av e d i egconnected s5 enabling them .to. variably mutilate said gear, thereby to'cause subsequent disconnection of the pinion from .tlie'gear at a point 1 predetermined by the'key operated, a power rotated member, a. normally closed clutch between said power-rotated member and. -.saidpin on, and means to enable said keys "upon their down strokes to open said clutch and upon the up strokes to closesaid'clutch.

13. In a computing machine, the combination with numeral keys and computing wheels, of a master wheel for turning said computing wheels aeriat'im, "a device operated by said numeral keys for determining.

[how far said master wheel ,sliallftui'nat the depression of each numeral key, a motor for clutch between said-motor; and said device, means operated by the depression of a nu- .meral key for opening said clutch and pea tii-ely starting said'm'otor-i'vhile said clutch is open, and means operated by said keycontrOIIeddevice for later closing said clutch and positivelyope'ningsaid circuit when said master wheel has completed its ti riiing.. 14., A computing machine having computingmecha'ni'smand a normally idle motor for dr y ng said computing mechanism, and .comprising n combination numeral ke'ysfor determininghow far said computing wheel's shall be turned, connections betweeng'said motor and said computing wheels,-a-normally closed" clutch in said connections, and

means for starting said motor and opening said clutch on the down-stroke of a key, and

- turning sa-i d master wheel, a normally closed for closing-saidclutch to drive said comput- I in'g mechanism-on the lip-stroke of a ke 15, In'a computing machine, the coin ination with numeral keys and computing ,wheels, of a motor, a normally open circuit for'driving said motor, a gear wheel'drii'eii by said motor when turning,-a'niiitilatable. gearyhaving a mutilated portion opposite said motor-driven gear wheeL-a clutch bea.

tween said motor-drii'cii gear wheel -and said motor,;means for releasing said clutch depression of. a numeral key, means for said clutch efiectiveg on the iip-sti'ole of-a;

- numeral key and breaking said circuit when said motor-driven gear wheel has turned to and restoring-said mutilatable gear'with the bring the freshly mutilated 'portion opposite said motor-driven geaia'wheel', so that the circuit is broken as soon the motor-turns idly.

a computing machine haying comput ing devices and a mot oi" for-.driving said clutch on a down-stroke of a key, and means for closing said clutch on the lip-stroke of said key.

17. A computing machine having comput'ing devices and, an electric motor for driving them, said motor having a normally open circuit, and comprising in combination a key, a normally closed clutch between said motor and said computing devices, means for starting said motor and releasing said clutch on the down-stroke of a key, means 'for closing said clutch on the up stroke of said key, and means for breaking the circuit when said comput ngdevlces'have been com- A pletely operated.

' 18 In a computing machine, the-combination with computing wheels and numeral keys, of a motor for turning said wheels under the control of said keys, a connection between said motor and said computing wheels including a-normally closed clutch,

and means controlled from a numeral key for starting said motor on the downtroke of a key andopening said clutch, and means controlling the subsequent closing of said clutch,

whereby the computing wheels are driven by the motor.

M19, In a computing machine, the combina tion with computing mechanism, ,of a motor for driv ng said mechanism, numeral keys,

{devices settable under the control of said keys for determinin how far said computing mechanism shall be actuated by said -motor, said keys acting on said .settable devices during apart .of theiroperation, and

isaid motor-actingon said computing mecha Jamsm during a subsequentpart of akey op- Jeration, a normally effective connection betweensaid motor and said c01i1putingmecl1- anism, and means whereby any" one of said keys may render said connectionsinefi'ective durin the setting operationof akey.

'20. n a computing machine, the combination with computing mechanism-and a typewriting carriage, of a motor for-driving said computing mechanism, numeralkeys for de- =termininghow far said motor shall drive -'sa-i'd computing mechanism, means controlled by said carriage fordet ermining the time in the cycle of-operation' when said'm'otor shall drivesaidcomputing mecha'nisima normally effective connection-between said motor and said computing mechanism. means controlled by any one of said numeral keys for render-,

ing said connection ineffective while the key is determining how far said computing mechanism shall be driven an d m'eansfor restoring said connection after said carriage has determined the time in the cycle of operation when-said motor shall drive said com puting mechanism.

21. In a computing machine. the combination with computing mechanism and a t i-'p ewriting carriage. of a motor for, driving said mechanism, normally effective connect-ions ineans controlled by sgiidfl prolonged.

lingthe extent-of mo nien tions again effecti veih tweep, said between said motor and said computing mechanism, numerit keys *foi";determining how far said motor slla'll drive 's'aid Eofihputing mechanism and also con'trollin 'th'c letter-feeding movementof said cam dine-ans controlled by said keys on their down "trokcs for. determining how far i i shall drive said com putin d'eyic'e tindering said connections controlled by said kers lit g n ii ilfiof the up-stroke for controlling t st'ep ihovcment of said carriage, andfinjtfaiis operated by said carriage, after it '1 "liitilji t's step movement for rentle id i z'tiifniefctions again effective toconti thii'dri (it said computing mechanism "byfiai'd im'otoig' In a computinginachinc;gthe combina 'tion with a system of computing ivflieels and a master wheel fort nmg t1 'Jrz'tiiz'm, a motor for driving sji'idjiiastcr wli'e'l; normally effective conndctionsli tor and said masterwlieel numf' ing how' far said' masten turned 'by said motor, and

an .cqntrolling the extent of momma; 'Jof 'sait l 'ihaster wheel also acting to reads i'i'd "conneptions gement of said.Jp &fii1wlieel"w ti said computm g wheels, .s zili between. said motor, I d li id ili'gister y wl eel neffective, means )E or ncr 111 connections again efi'edt fe and said master whee lop ,silkdli lfilgpvheel movingi emen .iita aeel ing effective during ema n n zpbrtion of the key-stroke w l eby -g e ti ipflduring which the computat n miay ,ta ekpxace is 23. In acomputing tion with a. system of eigmp ut-i rrgflv heglszlnd a master wheel forrtl rni'ng motor for'drivmg said maseqwiieeha nor.- mally open-circuit forgsaidtg o or g'rmally efi'ective connections, bet-ween; saidinigtor and said master 'Wh8Bl,-I1U,p}i fll l l3; I controlled by'said keysior closipgsaiglcircuit, determining how far.sa;id-;ma s 3; heel shall be turned by said motor,,an d tt le semi item, en-- gagement of said -master wheel with said computing .wheels, =sai z eys wh ie cont-rolof; s'a t; ,m aster connections ineffective, means for. render;ngsdid connecmo or'iind said masterwheel omsa d-maste' r. i are ing' into engagement wgith the comput ng wheel to be turned. said connections remaining effective during the remaining portion of 'the keystroke, whereby the time during which the computation may take place is prolonged.

24. In a computing machine, the combl nation with a motor; of computing wheels ta i cgtti'm, a V

5 ie ;tive, a cam shaft under control of any \key, a cam on said shaft, and means brought into action by said cam for making said clutch ineffective on the down stroke of the key and for making said clutcli' effective on the up stroke thereof. 25.- In a computing machine, the combination with a motor normally idle, of computing wheels, and numeral keys, driving,

means for'turni'n [said computing wheels by said motor, a. c utch between said motor and said driving means normally efi'e'c'tive, a cam shaft controlled by. any key, two cams on said shaft,'means controlled by one of said cams for starting said motor on the .down stroke of the key, means controlled by the otherof said cams for making'said clutch ineffective on the down stroke, and means operated by the second cam operating on the u stroke of said keyto render said clutche ective. a

'26. In-a computing machine, the combination with ,a motor normally idle, of computing wheels arranged to be turned by the motor, numeral keys for determining how far said computing wheels shall be turned, .a camshaft operatedby any key, a cam on said shaft for starting sai motor, and a second cam on said shaft for automatically connecting said-motor to drive said computing wheels after said-motor has started. 2-7. In -a computing machine, the combination with computing mechanism, of an indexing wheel for controlling the computing mechanism, indexing pins on said wheel for determining theamount of turning of said, wheel, and thereby said computing mechanism, a motor, a circuit for said motor normally open, a key for settin' any of said pins to determine how far 1; e jiiide'xing wheel shall turn" and closing said motor circuit, and a latch-forholdin said circuit closed, the set indexing pin directly engagingsa-id latch to open the motor circuit.

2S."In a comput ng machine, the combination with computing devices, of a motor for driving-said computing dGVlOQ? tions-between said motor and 5m being normall interrupted .at one point and complete at t e other point, numeral keys,

stroke of any numeral key for determining how' far said motor shall drive said comput- 'connec-- devicesinterruptible at two points, said connect ons means broughtinto action on the down ing devices and for completing said connections at the point at which they are normally interrupted, and interrupting said connections at the other point, and means brought into action on the up stroke of any numeral keyfor restoring said connections to normal; I

29. In a computing machine, the combination with computing mechanism including an indexing wheel, of a motor for operating said computing. mechanism, connections from said motor to the indexing wheel, said connections being normally interrupted at the indexing wheel, means for interrupting said connections at a point between said indexing wheel andsaid motor,

numeral keys, means brought into action by any numeral key on its down stroke for controlling said indexing wheel, to determine the amount of its driving action by the motor and for rendering said connections effective at said indexing wheel and breaking said connections at said other point, and meansbrought into action by any numeral key on its up stroke for restoring said connections to normal. I 30. In a computing machine, the combination with computing devices, of an indexing wheel constituting a gear which'may be mutilated 'at difl'erent points, a motor for said computing tleVlQt'STlOllliilll) idle, a cir-- cuit for said inotoiya connection from said motor to said' indexing 'wheel,'-a clutch in said connection to determine whether or not said indexing wheel shall be driven by said motor, numeral keys, and means controlled on the down stroke of any key for controlling the-opening ofsaid clutch and the 0105- ingof said motor circuit, so that said-motor may start but does not immediately drive said indexing wheel, thereby allowing a change in condition-of mutilation of said indexing wheel to takeplace."

'31. In .a computing machine, the combination with computin'g mechanism, of a pinion for driving said computing mechanism, a motor'fo'r driving said pinion,-'keysifor detern'i'ining how far said pinion shall drive 7 said computing mechanism, and connections between said motor and Said-P1111011 and said computing mechanism, means 'for maintaining said connections during the turning of said pinion to effect computatiomand irthe speed of said inion.

GUSTAVE O. D IGENER.

Witnesses:

,J. E. Dumson, D. BAYLIS.

respective of 

